The friction properties of composite materials are very important in industrial applications. The influence factors of the friction coefficient of the flake graphite composite material, mainly include the content and distribution of the flake graphite, the condition of the friction surface, the pressure and the friction temperature, and so on. Today, The Furuite graphite xiaobian will talk about the influence factors of the friction coefficient of the flake graphite composite material:
Influence factors of friction coefficient of flake graphite composites
1. Content and distribution of flake graphite.
The friction coefficient of composite material depends on the area fraction of the composite flake graphite. The greater the content of flake graphite in the material, the greater the area fraction of flake graphite on the friction surface. In addition, the more evenly the flake graphite is distributed, the more easily the graphite coating on the friction surface can be connected to the sheet, thus reducing the friction coefficient of the composite.
2. The condition of friction surface.
The friction surface condition refers to the size and nature of the friction surface bump. When the degree of tooth occlusion is small, the area fraction of the flake graphite on the friction surface of the composite material is reduced, therefore, the friction coefficient increases.
3. Stress.
The surface of composite material is always uneven, when the pressure is low, the joint of the friction surface is local, so it produces serious adhesive wear, so the friction coefficient is large.
4. Friction temperature.
Friction temperature directly affects the oxidation and destruction of graphite lubrication layer on friction surface. The higher the friction temperature, the faster the oxidation of graphite lubrication layer. Therefore, the more serious the damage of graphite lubrication layer, leading to the increase of friction coefficient.
Post time: Apr-13-2022